116651661 has 16 divisors (see below), whose sum is σ = 177949824. Its totient is φ = 66585024.

The previous prime is 116651617. The next prime is 116651663. The reversal of 116651661 is 166156611.

It is not a de Polignac number, because 116651661 - 2⁷ = 116651533 is a prime.

It is a super-2 number, since 2×116651661² = 27215220028117842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116651663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20971 + ... + 25943.

It is an arithmetic number, because the mean of its divisors is an integer number (11121864).

Almost surely, 2^116651661 is an apocalyptic number.

It is an amenable number.

116651661 is a deficient number, since it is larger than the sum of its proper divisors (61298163).

116651661 is a wasteful number, since it uses less digits than its factorization.

116651661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6100.

The product of its digits is 6480, while the sum is 33.

The square root of 116651661 is about 10800.5398476187. The cubic root of 116651661 is about 488.6114527613.

The spelling of 116651661 in words is "one hundred sixteen million, six hundred fifty-one thousand, six hundred sixty-one".